Slow WiFi connection speed on Surface Pro 4 or Surface Book

If you have just purchased a new Surface Pro 4 or Surface Book, but your WiFi connection speed is slow, you may want to check if this solution can solve your problem.

In response to a question about Microsoft’s responses, a Microsoft support engineer said :

We have a known problem with.41 that results in low throughput at some access points. The problem is specific to MAC layer aggregation (AMSDU via AMPDU) and affects only a small subset of access points. We are working on a patch for an upcoming update. Until the update is available, please update the registry key to get around this problem.